What is ‘Friction Stir Welding(FSW)’?

When a non-consumable tool having a protrusion is rotated at a high speed and inserted into the workpiece, heat is generated by the friction between the tool and the workpiece. FSW is a welding method in which materials around a tool are softened by frictional heat, and materials on both sides of a joint are forcibly joined by plastic flow of the material by stirring of the tool.

FSW Process